20.500.12556/DiRROS-16247 Effect of deep cryogenic treatment on corrosion properties of various high-speed steels The aim of the study was to evaluate the corrosion properties of three different grades of high-speed steel following a heat treatment procedure involving deep cryogenic treatment after quenching and to investigate how these properties are connected to the microstructure and hard- ness of the material. The hardness of steels was measured, and microstructural properties were determined through observation of the metallographically prepared steels using scanning electron microscopy. These studies were complemented corrosion evaluation by the use of corrosion potential measurement and linear polarization measurement of steels in a sodium tetraborate buffer at pH 10. The results showed that the deep cryogenic procedure of high-speed steel changed the microstructure and consequently affected the hardness of the investigated steels to different extents, depending on their chemical composition. Corrosion studies have confirmed that some high-speed steels have improved corrosion properties after deep cryogenic treatment. The most important improvement in corrosion resistance was observed for deep cryogenically treated high-speed steel EN 1.3395 (M3:2) by 31% when hardened to high hardness values and by 116% under lower hardness conditions. The test procedure for differentiating corrosion properties of differently heat-treated tool steels was established alongside the investigation. deep cryogenic treatment corrosion microstructure hardness podhlajevanje korozija mikrostruktura trdota true false true MDPI AG Angleški jezik Slovenski jezik © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-02-10 13:24:23 2023-08-01 08:18:28 2023-08-02 03:36:45 0000-00-00 00:00:00 2021 0 0 Nasl. z nasl. zaslona; Opis vira z dne 4. 1. 2021; Št. članka: 14; str. 1-16 iss. 1 Vol. 11 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-12-24 620.1/.2 2075-4701 10.3390/met11010014 45107971 https://www.mdpi.com/2075-4701/11/1/14 Odprti dostop 1 db332f7d-a93d-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21656 RAZ_Voglar_Jure_2021.pdf RAZ_Voglar_Jure_2021.pdf 1 52C561529478416B8981C5C3A956C731 f59a04e5aa78f0c0033317bd463f134d31b525a1f0ba209aaa489b8bd64c58fc 010f1385-a940-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21657 Zavod za gradbeništvo Slovenije 0 0 0